Like a great many other things, that'd just be too simple. I fanwank it as Bruce acting so crazy Cass couldn't make head or tails of what she was seeing beyong "he's angry, and also he's not okay", but I really doubt that what Brubaker meant.
Maybe I'm being unfair, but making Cass wise with words because she speaks little and is an Asian girl with martial arts skills is a trope that occasionally raises its ugly head and makes me mighty suspicious of any place where Cass seems a little too savvy with words.